Definition of the transfer coefficient in electrochemistry (IUPAC Recommendations 2014)

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Title: Definition of the transfer coefficient in electrochemistry (IUPAC Recommendations 2014)
Authors: Guidelli, Rolando | Compton, Richard G. | Feliu, Juan M. | Gileadi, Eliezer | Lipkowski, Jacek | Schmickler, Wolfgang | Trasatti, Sergio
Research Group/s: Electroquímica de Superficies
Center, Department or Service: Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica
Keywords: Electrode kinetics | IUPAC Physical and Biophysical Chemistry Division | Symmetry factor | Tafel slope | Transfer coefficient
Knowledge Area: Química Física
Issue Date: 5-Feb-2014
Publisher: De Gruyter | IUPAC
Citation: Pure and Applied Chemistry. 2014, 86(2): 259-262. doi:10.1515/pac-2014-5025
Abstract: The transfer coefficient α is a quantity that is commonly employed in the kinetic investigation of electrode processes. An unambiguous definition of the transfer coefficient, independent of any mechanistic consideration and exclusively based on experimental data, is proposed. The cathodic transfer coefficient αc is defined as –(RT/F)(dln|jc|/dE), where jc is the cathodic current density corrected for any changes in the reactant concentration on the electrode surface with respect to its bulk value, E is the applied electric potential, and R, T, and F have their usual significance. The anodic transfer coefficient αa is defined similarly, by simply replacing jc with the anodic current density and the minus sign with the plus sign. This recommendation aims at clarifying and improving the definition of the transfer coefficient reported in the 3rd edition of the IUPAC Green Book.
ISSN: 0033-4545 (Print) | 1365-3075 (Online)
DOI: 10.1515/pac-2014-5025
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2014 IUPAC & De Gruyter
Peer Review: si
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Appears in Collections:INV - EQSUP - Artículos de Revistas

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